Journal article
Two‐Dimensional Arrays of Transition Metal Nitride Nanocrystals
Advanced materials (Weinheim), v 31(33), pp e1902393-n/a
16 Aug 2019
PMID: 31237381
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
The synthesis of low‐dimensional transition metal nitride (TMN) nanomaterials is developing rapidly, as their fundamental properties, such as high electrical conductivity, lead to many important applications. However, TMN nanostructures synthesized by traditional strategies do not allow for maximum conductivity and accessibility of active sites simultaneously, which is a crucial factor for many applications in plasmonics, energy storage, sensing, and so on. Unique interconnected two‐dimensional (2D) arrays of few‐nanometer TMN nanocrystals not only having electronic conductivity in‐plane, but also allowing transport of ions and electrolyte through the porous nanosheets, which are obtained by topochemical synthesis on the surface of a salt template, are reported. As a demonstration of their application in a lithium–sulfur battery, it is shown that 2D arrays of several nitrides can achieve a high initial capacity of >1000 mAh g−1 at 0.2 C and only about 13% degradation over 1000 cycles at 1 C under a high areal sulfur loading (>5 mg cm−2).
Two‐dimensional arrays of transition metal nitride nanocrystals are synthesized by using a general salt‐templating method. During ammoniation, the initially formed metal oxides are etched and topochemically transformed to metal nitrides, resulting in interconnected metal nitride nanocrystals. Such a unique structure provides both high surface area and conductivity, as demonstrated in a highly stable Li–S battery.
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Details
- Title
- Two‐Dimensional Arrays of Transition Metal Nitride Nanocrystals
- Creators
- Xu Xiao - Drexel UniversityHao Wang - Soochow UniversityWeizhai Bao - University of Technology SydneyPatrick Urbankowski - Drexel UniversityLong Yang - Columbia UniversityYao Yang - Cornell UniversityKathleen Maleski - Drexel UniversityLinfan Cui - Drexel UniversitySimon J. L Billinge - Brookhaven National LaboratoryGuoxiu Wang - University of Technology SydneyYury Gogotsi - Drexel University
- Publication Details
- Advanced materials (Weinheim), v 31(33), pp e1902393-n/a
- Publisher
- Wiley
- Number of pages
- 7
- Grant note
- NASA (80NSSC18P2073) Australian Renewable Energy Agency (2014/RND106) National Science Foundation (DMR‐1719875; DMR‐1420634) U.S. Department of Energy (DE‐SC0012704) China Scholarship Council (201706920081)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000481909600023
- Scopus ID
- 2-s2.0-85068250722
- Other Identifier
- 991014878440804721
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InCites Highlights
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Chemistry, Multidisciplinary
- Chemistry, Physical
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology
- Physics, Applied
- Physics, Condensed Matter